Private hospitals paid by crypto and declaring themselves free from the tyranny W.H.O_U.N.
Yea, but it is a legal minefield. Legal fraud laws, medical fraud laws, illegal marketing, tax laws, ... . Even if you are provably perfect, you can be drowned in legal battles.
There are millons of localities where this can be done. They are places where legislation has little traction. Legal battles can become irrelevant when distance and costs prevail.
Rural places in Africa, South and Central America, and other locales where big-ticket hospital franchises cannot compete. They prefer big city insurance money, not crypto.
Also, people who seem quite willing to let millions die in order to get a bit richer, do you trust that they will not be willing to kill a few key people here and there?
They will indeed kill : many assassinations are underway now and will continue but the day shall come when self-defense becomes a 'household term' again.